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(a) The diagram below shows the extraction of sodium metal using the Downs cell. Study it and answer the questions that follow:
(i) Explain why in this process the sodium chloride is mixed with calcium chloride.
(ii) Why is the anode made of graphite and not steel?
(iii) State two properties of sodium metal that make it possible for it to be collected as shown in the diagram?
(iv) What is the function of the steel gauze cylinder?
(v) Write ionic equations for the reactions which take place at:
(I) Cathode
(II) Anode
(vi) Give one industrial use of sodium metal.
(b) Explain why the sodium metal is stored under kerosene.